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| author | Rose Hogenson <rhogenson@posteo.net> | 2022-01-11 22:01:23 -0800 |
|---|---|---|
| committer | Rose Hogenson <rhogenson@posteo.net> | 2022-01-11 22:01:23 -0800 |
| commit | 68986fe0410584c6934c835bb0ee784655f5f8c5 (patch) | |
| tree | d51bc2f3e09df35ef81b7a0c462ff555b4344701 /csc/gensym.csc | |
| parent | Add a first implementation of a macro expander. (diff) | |
| download | chromatopelma-68986fe0410584c6934c835bb0ee784655f5f8c5.tar.zst | |
Move scheme compiler into a separate directory.
Diffstat (limited to 'csc/gensym.csc')
| -rw-r--r-- | csc/gensym.csc | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/csc/gensym.csc b/csc/gensym.csc new file mode 100644 index 0000000..a7c30c5 --- /dev/null +++ b/csc/gensym.csc @@ -0,0 +1,25 @@ +(define-library (csc gensym) + (export + gensym + gensym=?) + (import (scheme base)) + (begin + + + (define-record-type <gensym> + (make-gensym id) + gensym? + (id gensym-id)) + + + (define (gensym=? s1 s2) + (= (gensym-id s1) (gensym-id s2))) + + + (define *next-id* 0) + + + (define (gensym) + (let ((sym (make-gensym *next-id*))) + (set! *next-id* (+ 1 *next-id*)) + sym)))) |
